115724520 has 96 divisors (see below), whose sum is σ = 377437320. Its totient is φ = 30750720.

The previous prime is 115724513. The next prime is 115724549. The reversal of 115724520 is 25427511.

115724520 is a `hidden beast` number, since 115 + 7 + 24 + 520 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 46867716 + 68856804 = 6846^2 + 8298^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 187252 + ... + 187868.

Almost surely, 2^115724520 is an apocalyptic number.

115724520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 115724520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188718660).

115724520 is an abundant number, since it is smaller than the sum of its proper divisors (261712800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

115724520 is a wasteful number, since it uses less digits than its factorization.

115724520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1155 (or 1148 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 27.

The square root of 115724520 is about 10757.5331744782. The cubic root of 115724520 is about 487.3135223664.

The spelling of 115724520 in words is "one hundred fifteen million, seven hundred twenty-four thousand, five hundred twenty".